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  2. Mk 12 Special Purpose Rifle - Wikipedia

    en.wikipedia.org/wiki/Mk_12_Special_Purpose_Rifle

    An 18-inch (457 mm) (MOD 0/1) or 16-inch (406 mm) (MOD H) threaded-muzzle match-grade free floating stainless steel heavy barrel with a 1:7 (178 mm) rifling twist ratio is standard for the SPR. [11] [3] [13] The barrels are manufactured by Douglas Barrels with a unique contour that reduced weight but maintained rigidity for accuracy. [14]

  3. Harrington & Richardson - Wikipedia

    en.wikipedia.org/wiki/Harrington_&_Richardson

    H&R 330: Made from 1968 to 1972, this model is an FN Mauser action that Harrington and Richardson bought as surplus and produced into sporterized hunting rifles using Douglas barrels and conventional stocks, chambered in 7mm Remington Magnum. [23] H&R M12 5200: A competitor to the Winchester Model 52 series rifle. Bolt action .22 LR single-shot ...

  4. List of multiple-barrel firearms - Wikipedia

    en.wikipedia.org/wiki/List_of_multiple-barrel...

    Below is a list of multiple-barrel firearms of all forms from around the world. [1. Pistols. Name Manufacturer Image Cartridge Country Year Arsenal Firearms AF2011A1 ...

  5. Rifling - Wikipedia

    en.wikipedia.org/wiki/Rifling

    Rifling of a 105 mm Royal Ordnance L7 tank gun Conventional rifling of a 90 mm M75 cannon (production year 1891, Austria-Hungary) Rifling in a GAU-8 autocannon. Rifling is the term for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability and accuracy.

  6. Fluting (firearms) - Wikipedia

    en.wikipedia.org/wiki/Fluting_(firearms)

    G22 of the German Army with a fluted barrel. Closeup of PGW Timberwolf action with a helically fluted bolt. Fluting is the removal of material from a cylindrical surface in a firearm, usually creating grooves. This is most often the barrel of a rifle, though it may also refer to the cylinder of a revolver or the bolt of a bolt action rifle.

  7. Your February Love Horoscope Is Full of Unexpected Romances ...

    www.aol.com/february-love-horoscope-full...

    Release your inhibitions, Cancer.February is challenging you to venture outside of your comfort zone — and you have the green light to act on your heart’s desires.

  8. Polygonal rifling - Wikipedia

    en.wikipedia.org/wiki/Polygonal_rifling

    Conventional eight groove rifling on the left, and octagonal polygonal rifling on the right. Polygonal rifling (/ p ə ˈ l ɪ ɡ ə n əl / pə-LIG-ə-nəl) is a type of gun barrel rifling where the traditional sharp-edged "lands and grooves" are replaced by less pronounced "hills and valleys", so the barrel bore has a polygonal (usually hexagonal or octagonal) cross-sectional profile.

  9. Multiple-barrel firearm - Wikipedia

    en.wikipedia.org/wiki/Multiple-barrel_firearm

    Remington Model 95 with pearl grips and barrels open for reloading COP .357 Magnum derringer. The original Philadelphia Deringer was a small single-barrel, muzzleloading caplock pistol designed by Henry Deringer (1786–1868) and produced from 1852 to 1868, and was a popular concealed carry single-shot handgun of the era widely copycatted by competitors. [6]